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TI-2021-18034 Aliases CVE-2021-41195GHSA-cq76-mxrc-vchh

Crash in `tf.math.segment_*` operations

Priority LOW 24CWE-190Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from CWE-190 and the CVSS impact.

Summary

TensorFlow is an open source platform for machine learning. In affected versions the implementation of `tf.math.segment_*` operations results in a `CHECK`-fail related abort (and denial of service) if a segment id in `segment_ids` is large. This is similar to CVE-2021-29584 (and similar other reported vulnerabilities in TensorFlow, localized to specific APIs): the implementation (both on CPU and GPU) computes the output shape using `AddDim`. However, if the number of elements in the tensor overflows an `int64_t` value, `AddDim` results in a `CHECK` failure which provokes a `std::abort`. Instead, code should use `AddDimWithStatus`. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.

Why it matters now

EPSS 0.00212 11th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed tensorflow (tensorflow): 2.6.1, 2.5.2, 2.4.4tensorflow (PyPI): 2.6.1, 2.5.2, 2.4.4+2 more products

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Googletensorflow2.6.0 to before 2.6.1; 2.5.0 to before 2.5.2; before 2.4.42.6.1, 2.5.2, 2.4.4Patch availableCNA
—tensorflow (PyPI)2.6.0 to before 2.6.12.6.1Patch availableGHSA-cq76-mxrc-vchh
—tensorflow (PyPI)2.5.0 to before 2.5.22.5.2Patch availableGHSA-cq76-mxrc-vchh
—tensorflow (PyPI)before 2.4.42.4.4Patch availableGHSA-cq76-mxrc-vchh
—tensorflow-cpu (PyPI)2.6.0 to before 2.6.12.6.1Patch availableGHSA-cq76-mxrc-vchh
—tensorflow-cpu (PyPI)2.5.0 to before 2.5.22.5.2Patch availableGHSA-cq76-mxrc-vchh
—tensorflow-cpu (PyPI)before 2.4.42.4.4Patch availableGHSA-cq76-mxrc-vchh
—tensorflow-gpu (PyPI)2.6.0 to before 2.6.12.6.1Patch availableGHSA-cq76-mxrc-vchh
—tensorflow-gpu (PyPI)2.5.0 to before 2.5.22.5.2Patch availableGHSA-cq76-mxrc-vchh
—tensorflow-gpu (PyPI)before 2.4.42.4.4Patch availableGHSA-cq76-mxrc-vchh
  • tensorflow VendorGoogle Affected 2.6.0 to before 2.6.1; 2.5.0 to before 2.5.2; before 2.4.4 Fixed in 2.6.1, 2.5.2, 2.4.4 Patch available CNA
  • tensorflow (PyPI) Vendor— Affected 2.6.0 to before 2.6.1 Fixed in 2.6.1 Patch available GHSA-cq76-mxrc-vchh
  • tensorflow (PyPI) Vendor— Affected 2.5.0 to before 2.5.2 Fixed in 2.5.2 Patch available GHSA-cq76-mxrc-vchh
  • tensorflow (PyPI) Vendor— Affected before 2.4.4 Fixed in 2.4.4 Patch available GHSA-cq76-mxrc-vchh
  • tensorflow-cpu (PyPI) Vendor— Affected 2.6.0 to before 2.6.1 Fixed in 2.6.1 Patch available GHSA-cq76-mxrc-vchh
  • tensorflow-cpu (PyPI) Vendor— Affected 2.5.0 to before 2.5.2 Fixed in 2.5.2 Patch available GHSA-cq76-mxrc-vchh
  • tensorflow-cpu (PyPI) Vendor— Affected before 2.4.4 Fixed in 2.4.4 Patch available GHSA-cq76-mxrc-vchh
  • tensorflow-gpu (PyPI) Vendor— Affected 2.6.0 to before 2.6.1 Fixed in 2.6.1 Patch available GHSA-cq76-mxrc-vchh
  • tensorflow-gpu (PyPI) Vendor— Affected 2.5.0 to before 2.5.2 Fixed in 2.5.2 Patch available GHSA-cq76-mxrc-vchh
  • tensorflow-gpu (PyPI) Vendor— Affected before 2.4.4 Fixed in 2.4.4 Patch available GHSA-cq76-mxrc-vchh

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:*before 2.4.4; 2.5.0 to before 2.5.2; 2.6.0 to before 2.6.1VulnerableGoogle
  • cpe:2.3:a:google:tensorflow:*:*:*:*:*:*:*:* Versions before 2.4.4; 2.5.0 to before 2.5.2; 2.6.0 to before 2.6.1 Vulnerable ·Google

Remediation

  • Fix · CNA tensorflow (tensorflow) Fixed in 2.6.1, 2.5.2, 2.4.4
  • Fix · GHSA-cq76-mxrc-vchh tensorflow (PyPI) Fixed in 2.6.1 Advisory →
  • Fix · GHSA-cq76-mxrc-vchh tensorflow (PyPI) Fixed in 2.5.2 Advisory →
  • Fix · GHSA-cq76-mxrc-vchh tensorflow (PyPI) Fixed in 2.4.4 Advisory →
  • Fix · GHSA-cq76-mxrc-vchh tensorflow-cpu (PyPI) Fixed in 2.6.1 Advisory →
  • Fix · GHSA-cq76-mxrc-vchh tensorflow-cpu (PyPI) Fixed in 2.5.2 Advisory →
  • Fix · GHSA-cq76-mxrc-vchh tensorflow-cpu (PyPI) Fixed in 2.4.4 Advisory →
  • Fix · GHSA-cq76-mxrc-vchh tensorflow-gpu (PyPI) Fixed in 2.6.1 Advisory →
  • Fix · GHSA-cq76-mxrc-vchh tensorflow-gpu (PyPI) Fixed in 2.5.2 Advisory →
  • Fix · GHSA-cq76-mxrc-vchh tensorflow-gpu (PyPI) Fixed in 2.4.4 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-41195
  2. 2026-10-03 Alias added: GHSA-cq76-mxrc-vchh

References

Exploit 1

Patch 3

Advisory 1

Other 4

  • TI-2022-20241 FractionalMaxPool and FractionalAVGPool heap out-of-bounds acess in Tensorflow CVSS 3.1CRITICAL 9.8
  • TI-2022-07640 Integer overflow in Tensorflow CVSS 3.1CRITICAL 9.8
  • TI-2022-07627 Out of bounds read and write in Tensorflow CVSS 3.1HIGH 8.8
  • TI-2022-07619 Out of bounds write in Tensorflow CVSS 3.1HIGH 8.8
  • TI-2022-07613 Read and Write outside of bounds in TFLite CVSS 3.1HIGH 8.8
  • TI-2022-07612 Integer overflow in TFLite CVSS 3.1HIGH 8.8
See all 430 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences